Louis Thomas Difazio, MD
Emergency Medicine Physician · Morristown, NJ
Louis Thomas Difazio, MD is an emergency medicine physician with a practice address in Morristown, New Jersey, and NPI 1376510032, issued on Mar 2, 2006. Check the license (New Jersey 25MA05768200, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Louis Thomas Difazio
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 25MA05768200 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 435 South St, Morristown, NJ 07960
- Phone
- (973) 971-7200
- Enumerated
- Mar 2, 2006
- Record last updated
- May 5, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20041103000303); accepts Medicare assignment
- Medical or professional school
- University Of Pittsburgh School Of Medicine, 1990
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,754 in New Jersey → Look up another NPI →
Also registered at 435 South St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Louis Thomas Difazio in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA05768200Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average emergency medicine physician in 2024
48 Medicare Part D claims for 21 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Eliquis12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 73.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $163.01
3 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Specialty Care OF Practice Associates PAMorristown, NJ
- Upmc Altoona Regional Health Services, Inc.Altoona, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Louis Thomas Difazio among 1,754 emergency medicine physician records in New Jersey
Louis Thomas Difazio, MD is one of 1,754 emergency medicine physician records with a practice address in New Jersey. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 61% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1990 · median 2011 among the 1,167 with a school on file
- Record last updated2015 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
84 emergency medicine physician records list a practice address in Morristown
They are 84 of the 2,942 NPPES records with a practice address in Morristown, and 1,754 emergency medicine physician records in New Jersey.
All 1,754 in New Jersey → Every provider in Morristown → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Marilyn Althoff, M.D.Morristown, NJ 079601013966217
- Christopher Amato, MDMorristown, NJ 079601407897721
- Jaroslaw Bilaniuk, MDMorristown, NJ 079601295700417
- Glenn Birnbaum, MDMorristown, NJ 079601679517395
- Dennis Cochrane, M.D.Morristown, NJ 079601922057132
- Frederick Fiesseler, D.O.Morristown, NJ 079601033177415
- Michael Gerardi, MDMorristown, NJ 079601194763425
- Oliver Hung, M.D.Morristown, NJ 079601356390173
Common questions
What is Louis Thomas Difazio, MD's NPI number?
Louis Thomas Difazio, MD's National Provider Identifier (NPI) is 1376510032, issued on Mar 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Louis Thomas Difazio, MD located?
The NPPES record lists a practice address at 435 South St, Morristown, NJ, 07960. Phone: (973) 971-7200. Providers update this record themselves, so call before visiting.
How can I verify Louis Thomas Difazio, MD's license?
NPPES lists New Jersey license number 25MA05768200, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Louis Thomas Difazio, MD prescribe under Medicare Part D?
In 2024, Louis Thomas Difazio, MD had 48 Medicare Part D claims for 21 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Louis Thomas Difazio, MD's MIPS final score?
The 2023 MIPS final score is 73.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.